import java.util.Scanner;
public class MenuDemo
{
public static void main(String[] args)
{
Scanner scanner=new Scanner(System.in);
int choice;
do
{
System.out.println("Help on:");
System.out.println("1.if");
System.out.println("2.switch");
System.out.println("3.while");
System.out.println("4.do-while");
System.out.println("5.for");
System.out.println("Choose on");
 choice=scanner.nextInt();
}
while(choice<1||choice>5);
System.out.println("\n");
switch(choice)
{
case 1:
System.out.println("The if:\n");
System.out.println("if(condition)statement;");
System.out.println("else statement;");
break;
case 2:
System.out.println("The switch:\n");
System.out.println("switch(expression){");
System.out.println("case constant:");
System.out.println("statement sequence");
System.out.println("break;");
System.out.println("//...");
System.out.println("}");
break;
case 3:
System.out.println("The while:\n");
System.out.println("while(condition)statement");
break;
case 4:
System.out.println("The do-while:\n");
System.out.println("do{");
System.out.println("statement");
System.out.println("}while (condition);");
break;
case 5:
System.out.println("The for:\n");
System.out.println("for(init ;condition;iteration)");
System.out.println("statement");
break;
}
}
}
